Automatic blower.



Patented July 3, I900. H. H. HUFF.

AUTOMATIC BLOWER.

(Apnlicat'mn filed Nov. 6, 1899.1

2 Sheets-Sheet I.

(No- Model.)

Inventor.-

Wo'lmses.

No. 652,964 Patented July 3, I900. H. H. HUFF.

AUTOMATIC BLOWER.

Appiicaticm filed Nov. 6, X899.)

2 SheetsSheet 2.

(No Model.)

liweni'or:

m'tnessks:

NITED u. now, or nos'ron, MA

HEX? SSIiCl oli'f'ft .NOR OF "l'WG-TZURDS; TG ARTHUR llCUPRAN. (3F SAME.Pl zitll wi'; iiliil'lli l; llUR'lON, 331.,

ii sis SPECIFIUATi'ON' forming" part of Letters Patent No. 652,964},dated July 3, 1906.

Application filed Novemher S, 1899 To (bl/I whom may concern.-

l'leit known that I, HENRY H. HUFF, of Bus ton,(Dorchester,) intheeouuty of Suffolk and State of Massachusetts, have invented certainnewnnd useful-In]provemeuts in Automatic Blowers of which the foilowingis aspecification.

This invention has for its object to provide automatic-means forcreating a forced draftin a locomotive when steam is shut oil from thesteam-chests of the cylindersse that the exhaust cannot be utilized forthis purpose.

The invention consists in a locomotive having a,.blower-nozzle, aconduit connecting it with the boiler, and means controlledalternatelyby pressure in a steam-chest of the locomotive and bypressure in the boiler for alternately closing and opening said conduit,the arrangement being such that Whenthe locomotive is running understeam the conduit is kept closed by steam-pressure in one of thesteanrchests,draft being supplied in the usual way by the exhaust fromthe cyl inders, but when steam is shut off from the steam-chest theconduit is opened by the boiler-pressure and steam is supplied to theblower.

Of the accompanying drawings, forming a part of this specification,Figure 1 representsside elevation showing portions of a locomotiveprovided with my improved automatic blower. Fig. 2 represents 2t frontele vation of the some. Fig. 3 represents an enlarged section on line 330f Fig. 2.

The same letters of referenceiudicute the same parts in all the figures.

In the d awings, a representsabiowennon zle located as usual in thesznoke-box of a locomotive.

1 represents aconduit' connecting the nor.- zle a with the boiler 0, sothat when said conduit is open steam passes fronl'the boiler to theblower-nozzle a. The conduit 5 is prefereeiy provided with a valve (Z,arranged to be operated from within the cab, whereby the conduit may-beclosed when the automatic supply of steam from the boiler to the nozzlea, as hereinafter described, is not do sired. .Sziid Val e however.

The conduit Z includes :1 valve havinga partition (.Ollliftillillgil If,to which is titted valve SniL arranged so that itcnn he for-oer: fromits s at bysteiun-pressure in the conduit 42 represents it cylinder conn e1 c with one of the Si'EIHllCil'C'Sih j of l motive. A piston g.fitted to move -cyliniiler, is ttachecl' to or hours stem 0' of thevalve 0. Ti pressure of am velvee, tending to openi-t; but t of thepiston exposed toetee in piee steam-chestis greater 1 the are of thesurface of the valve eiposed'to the pressure in the onduit and the 9arranged so 1o eteanrpressure against it tends to cl tne valve itfollows "int while s eam aduiitt to the Si-fiitilbfiiit the valvewiil heheld en and when st. .in is shut oil? from the StGitin'CilQ-s'i'; thevalve yields to and opened. by ihesteanrpres sure in the conduit. Itwill be seen, therefore, that the conduit Z) is alternately closed bysteam-pressure in the steam-chest and. opened by steam-pressure in 'theboiler, the blower-nozzle being thus automatically eonnected with. andshut off from the boiler. A spring: 8 is arranged to cushion the valvewhen it is opened by the boiler-pressure, thus provcniing a shock or jarwhen the valve is opened.

I do not limit myself to the means oere shown for. causing thesteai'u-pressure in the cylinder to close the conduit, as any othersuitable means may be employed for this pun pose without departing fromthe spirit of my invention. V

I- have here shown the smoke-stack g of the engine surrounded by acasing h, betvv eon which and the s ack is an annular chamber '12, Thesteel; is provided with numerous'sniaii perforations, over'each of whichlean-ire. eliue i lip or flange g. Said perforations connecttheinteriorof the stack with the ehaniher 2', and the: lips g guide or defleetintothe, perforetionsIthe cindergsperks, and particles ordinarily remainsmil perforations are arranged helically, so that the cinders movingalong the inner surface of the stack cannot pass upwardly between thelips. I It will be seen, therefore, that a con-.

siderable percentage of the cinders, &c., that enter the smoke-stack aredeflected into the chamber 11, from which they fall into a receptacle jat one side of the smoke-box. A pipe k'extends from the receptacle j tothe ash-pit of the fire-box or other suitable receptacle and conductsthe cinders to the latter. To induce a flow of cinders, a smallsteam-pipe m is introduced into the pipe is near its delivery end anddischarges a jet of steam in the direction required to exhaust thecinders from the pipe 70, said pipe m being connected with the boilerand provided with a valve m. An annular cover 0' closes the upper end of'the'chamber I claim- 1. A- locomotive having a blower-nozz e, a conduitconnecting it with the boiler, and means controlled alternately bypressure in a steam-chest of the locomotive, and by prese stack by surein the boiler, for alternately closing and opening said conduit.

2. In aloconiotive, the combination of a blower-nozzle, a steam-conduitconnecting said nozzle with the boiler, a valve adapted to control thesaid conduit, and means acted on by steam-pressure in a steam chest ofthe locomotive, to hold the valve in its closed position, the valve andits closing means being adapted to yield to the steam-pressure in theboiler and permit the passage of steam to the blower when steam is shutoff from the steam-chest.

3. In a locomotive, the combination of a blower-nozzle, a steam-conduitconnecting said nozzle withthe boiler, a valve arranged to close saidconduit against the boiler-pressure therein, a cylinder communicatingwith a steam-chest of the locomotive, and a piston in said 'chamberconnected with the said valve, the steam-pressure in the steam-chestacting on the piston to hold the valve closed until steam is shut offfrom the steam-chest, when the piston and valve yield to theboilerpressnre and permit steam to pass to the blower.

In testimony whereof I have afiixed my signature in presence of twowitnesses.

HENRY ll. HUFF.

Witnesses:

C. F. BROWN, GEO. M. Cameraman.

